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20101332 = 2231675111
BaseRepresentation
bin100110010101…
…1100011010100
31101211020211210
41030223203110
520121220312
61554501420
7332600316
oct114534324
941736753
1020101332
111038a479
126894870
13421a5a4
1429537b6
151b70e3c
hex132b8d4

20101332 has 12 divisors (see below), whose sum is σ = 46903136. Its totient is φ = 6700440.

The previous prime is 20101331. The next prime is 20101349. The reversal of 20101332 is 23310102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 1675111 = 20101332 / (2 + 0 + 1 + 0 + 1 + 3 + 3 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 837544 + ... + 837567.

Almost surely, 220101332 is an apocalyptic number.

It is an amenable number.

20101332 is an abundant number, since it is smaller than the sum of its proper divisors (26801804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20101332 is a wasteful number, since it uses less digits than its factorization.

20101332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675118 (or 1675116 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 20101332 is about 4483.4509030433. The cubic root of 20101332 is about 271.8994185493.

Adding to 20101332 its reverse (23310102), we get a palindrome (43411434).

The spelling of 20101332 in words is "twenty million, one hundred one thousand, three hundred thirty-two".

Divisors: 1 2 3 4 6 12 1675111 3350222 5025333 6700444 10050666 20101332